JPS5933504U - proportional valve control circuit - Google Patents

proportional valve control circuit

Info

Publication number
JPS5933504U
JPS5933504U JP12572282U JP12572282U JPS5933504U JP S5933504 U JPS5933504 U JP S5933504U JP 12572282 U JP12572282 U JP 12572282U JP 12572282 U JP12572282 U JP 12572282U JP S5933504 U JPS5933504 U JP S5933504U
Authority
JP
Japan
Prior art keywords
proportional valve
control circuit
valve control
amplifier circuit
set value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12572282U
Other languages
Japanese (ja)
Inventor
寺坂　彰矩
茂 霜田
光則 岡垣
Original Assignee
三洋電機株式会社
鳥取三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社, 鳥取三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP12572282U priority Critical patent/JPS5933504U/en
Publication of JPS5933504U publication Critical patent/JPS5933504U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の制御回路図、第２図は本案一実施例の制
御回路図、第３図は比例弁電流−ガス流量特性曲線図で
ある。 ＯＰ・・・増幅器、Ｔｒ□・・・駆動用トランジスタ、
ＶＡ・・・比例弁、２工・・・ツェナーダイオード。FIG. 1 is a conventional control circuit diagram, FIG. 2 is a control circuit diagram of an embodiment of the present invention, and FIG. 3 is a proportional valve current-gas flow rate characteristic curve diagram. OP...Amplifier, Tr□...Drive transistor,
VA...Proportional valve, 2nd piece...Zener diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 検出信号と設定信号との差に略比例するアナログ信号を
出力する増幅回路と、この増幅回路出力がベースに入力
され流量制御用の比例弁への通電量を制御する駆動用ト
ランジスタとからなるものにおいて、前記駆動用トラン
ジスタのベースに増幅回路出力が設定値以上となると導
通してベース電位を設定値に保持するツェナーダイオー
ドを接続したことを特徴とする比例弁制御回路。It consists of an amplifier circuit that outputs an analog signal that is approximately proportional to the difference between the detection signal and the setting signal, and a drive transistor that receives the output of this amplifier circuit and controls the amount of current to the proportional valve for flow rate control. A proportional valve control circuit characterized in that a Zener diode is connected to the base of the drive transistor, which becomes conductive when the output of the amplifier circuit exceeds a set value to maintain the base potential at the set value.
JP12572282U 1982-08-19 1982-08-19 proportional valve control circuit Pending JPS5933504U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12572282U JPS5933504U (en) 1982-08-19 1982-08-19 proportional valve control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12572282U JPS5933504U (en) 1982-08-19 1982-08-19 proportional valve control circuit

Publications (1)

Publication Number Publication Date
JPS5933504U true JPS5933504U (en) 1984-03-01

Family

ID=30286128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12572282U Pending JPS5933504U (en) 1982-08-19 1982-08-19 proportional valve control circuit

Country Status (1)

Country Link
JP (1) JPS5933504U (en)

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